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(No Mqdel.) 3 Sheets-Sheet 1.

E. K. JONES & T. N. WILSON.

FEED WATER HEATING APPARATUS.

No. 581.212. Patented Apr. 20, 1897.

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(No Model.) 3.Sheets---Sheet 2.

E. K. JONES & T. *N. WILSON. FEED WATER HEATING APPARATUS.

No. 581,212. Patented Apr. 20,1897,

IIVVEIVTORS:

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3 Sheets-Sheet 3.

(No Model.)

B K JONES 85 T N WILSON FEED WATERHEATING APPARATUS.

Patented Apr. 20, 1897.

A TTORIVE Y8.

WITNESSES:

II I I UNITED STATES PATENT OFFICE.

ELIHU K. JONES AND THOMAS N. WILSON, OF FULTON, OREGON.

FEED-WATER-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 581,212, dated April 20, 1897.

' Application filed August 5, 1896. Serial No. 601,768. (No model.)

To aZZ whom it may concern:

Be it known that we, ELIHU K. JONES and THOMAS N. WILSON, of Fulton, in the county of Multnomah and State of Oregon, have invented a new and Improved Feed-Water- Heating and Scale-Removing Apparatus for Steam-Boilers, of which the following is a specification.

Our invention is an improvement in the class of feed-water heaters in which the water is forced through hollow grate-bars on its way to the boiler. We have devised several improvements in the construction and arrangement of parts constituting such apparatus, as hereinafter described, and shown in the accompanying drawings, (three sheets,) in which Figure 1 is a vertical section of a boilerfurnace provided with our apparatus. Fig. 2, Sheet 2,is a perspective View of the grate. Fig. 3 is an enlarged vertical longitudinal section of the main grate-bar and the mud drum or separator attached thereto on line 3 3 of Fig. 2, looking in the direction of the arrow. Fig. 4 is a sectional view on line 4 4, Fig. 3,

of the main grate-bar and one of the tubes.

extending from it at a right angle. Fig. 5, Sheet 3, is an enlarged Vertical central section of the mud drum or separator. Fig. 6 is a horizontal section of the main hollow gratebar on line 6 6 of Fig. 5. Fig. 7 is a horizontal section ofthe separator on line 7 7 of Fig. 5. Fig. 8 is a sectional view showing two of the hollow arms attached to a grate-tube, one being in longitudinal section and the other in side view. Figs. 9 and 10 are perspective views of details hereinafter referred to.

A indicates a stationary tubular steamboiler arranged horizontally in brickwork in the usual way. A large water-circulating pipe B, having a stop-cock b and check-valve 21, connects the rear end and lower side of said boiler with a vertical mud drum or separator O, which is located in the bridge-wall D and attached to the under side of the rear hollow main bar E of the grate, which is also partly embedded in the front side of said bridge-wall.

A feed-pump (not shown) is connected with the drum or separator O at c, Fig. 5, and the feed-water passes thence into and through.

the hollow grate, and then through the small pipes G to the boiler A.

The construction of the grate is as follows: The principal parts of the grate are the large hollow main bar E, (see Figs. 1 and 2,) arranged in and flush with the front side of the bridge-wall D, the angular dead-plate E, at the front end of the grate, a series of hollow lengthwise tubes or main grate-bars E and a series of hollow or tubular arms E, that project horizontally from such cross-tubes E at right angles thereto. The several arms E of each tube E alternate, as shown, with the like arms E of a parallel and adjacent tube E The main cast-iron tube E, Fig. 3, has a central lengthwise horizontal partition 6, forming the channels or passages 1 and 2, one above the other, and each of these channels has as many side openings as there are longitudinal tubes E attached to bar E. Said tubes E have also a partition 6, and thus two longitudinal passages 3 and 4, one above the other.

. They are secured to the main tube E by means of bolts 4 passing through the flanged heads of tubes E which are seated on fiat surfaces, as shown. The front ends of tubes E rest on the ledge of the dead-plate E. The tubular arms E (see Fig. 8) screw into threaded sockets formed in the sides of tubes E Each arm has a central horizontal division plate or partition 6, which is, however, of less length than the chamber of the arm, so that a space is left at the outer or free end of the latter for passage of water from the lower channel or passage 3 to the upper one 4:. In the inner end of each arm E is a hollow cylindrical head E having a diametrical slot 7, Fig. 10, on .one side to receive the partition 6, and on the other a nozzle or central tubular projec tion 9, that enters and fits snugly in an opening or socket formed in the side of tube E and communicating with the upper channel 4 of the same. The partition 6 fits closely in the slot 7 and is thereby held or supported in due position. The circular head has also a transverse division plate or diaphragm 10, Figs. 9 and 10, corresponding to and in alinement with the partition 8 and forming practically a continuation of the latter. The

heads E are provided exteriorly with lateral lugs 11, which fit in corresponding notches 12, Fig. 9, in the tubular arm E and serve to prevent rotation of said heads and the partitions 6, attached to them.

The small pipes G, Figs. 1 and 2, attached to the upper side of the main grate-tube ll, extend upward and connect with a common head 11, located at the rear end of the boiler near the top of the same and consisting of a horizontal tube. The pipes I extend from it through the end of the boiler A, near the center of the latter, and are provided with stop cocks or valves 13.

The body of the mud drum or separator C is cylindrical and tapered at the lower end, to which an escape or blow-off pipe F, having a stop cook or valvef, is attached. The separator is arranged vertically and bolted to and suspended from the under side of the main grate-bar E, Figs. 1, 8, and 5. A central partition lat, Fig. 5, extends down about half the length of the separator and is provided with two openings 15 and 10, having hinged pendent cheek-valves 17 and 18, that open in opposite directions. An inclined imperforate partition 19 joins the lower end of such vertical partition It with the side of the body of the separator. These partitions 1t 19 form virtually one and divide the chamber of the separator into two compartments 0 and 0 A perforated plate or screen 20 is arranged in an inclined position to cover the upper valved opening 15. The pipe leading to the pump (not shown) is attached below the partition 17L and the mouth of pipe 15, that leads to the lower rear side of the boiler A, is provided with a hinged cheek-valve 21.

It is apparent that if the valve 1) of pipe 13 is closed and valve 13 of pipe I opened then water entering the separator C from the pumppipe will pass, as indicated by single-head arrows, through the perforated screen-plate 20, through the valved opening 15 in partition 1%, and thus into the lower passage 1 of gratebar E, and, passing thence through the gratetubes E and their lateral arms E will return heated to the upper passage 4 of said gratebar It and through pipe G, head H, and pipes I into the boiler A. It will also be noted that in this case the valves 17 and 18, respectively, open and close automatically.

The screen 20 strains the water passing through. it and some foreign matters are collected in the lower end of the separator. Some scale or other sediment is also deposited in the pocket or compartment 0 and collects on the inclined partition 19, on which it slides down to the valved opening 16.

Upon opening cook 13 of pipe I and valves 1) and fof pipes 13 and F water will discharge from the boiler through the separator C and pipe F, as indicated by double-headed arrows. In this case the valve 17 closes and valve 18 opens automatically, and the scale or sediment in pocket 0 is blown through opening 16 into the lower portion or compartment 0 of the separator, whence it passes out into pipe F.

\Vhen the valve f of blow-off F is closed and valves 1) and 13 of pipes B and I are opened, water will pass from the boiler through pipe I the separator O, the grate, and pipes G I, so that steam maybe generated quickly and in large amount. In this case the check-valve b in separator C comes into action.

It will be perceived that a practically equal distribution and circulation of water in all portions of the grate are assured, and since normally all the water from the pump passes through the grate before entering the boiler it is delivered to the latter highly heated or partly converted into steam. The arrangement is also such that the circulation is upward and the water enters and leaves the hottest part of the grate. The grate-bar E, tubes F and arms E, being provided with lengthwise partitions practically converts them into double tubes, which economizes material and space.

lVhat we claim is- 1. The combination with a steam-boiler of feed-water-heating apparatus composed of a main grate-bar having parallel lengthwise passages, a series of minor grate-bars, having like passages and joined to the main grate-bar as shown whereby the respective passages communicate, a series of pipes connecting said main grate-bar with the upper portion of the boiler, and a pipe connecting the lower portion of the boiler with the grate, substantially as shown and described.

2. The combination with a steam-boiler of a feed-water-heating apparatus, composed of a main grate-bar having separated longitudinal passages, a mud drum or separator connected with the lower passage of the same, and having a blow-off attachment, a series of minor grate-bars having parallel longitudinal passages, that communicate with the respective passages of said main grate-bar,pipes leading from the upper portion of the latter into the upper part of the boiler, and a pipe leading from the lower part of boiler to the separator, as shown and described.

In a feed-water-lieating apparatus, the combination with a series of grate-bars, having longitudinal passages, of a series of tubular arms having a partition, or diaphragm, that is separated from the free. end of the arm proper, whereby the latter is provided with upper and lower passages that communicate respectively with the upper and lower passages of said grate-bars, as shown and described.

4. In a l'eed-water-heating apparatus, the combination with the grate-bars having parallel, longitudinal, separated passages, of lateral tubular arms attached to the same, and having a partition forming upper and lower communicating passages, and a hollow, ap-

ertured head, arranged in the inner end of each arm and serving as a support for the partition or diaphragm which divides the arm longitudinally, substantially as shown and described.

5. In a feed-water-heating apparatus, the combination with grate-bar having parallel, separated, longitudinal passages, and lateral, tubular arms, partition-plates or diaphragms that divide the arms into upper and lower passages, a hollow apertured head arranged in the inner end of said arms, and having a slot or recess in which such partition-plates are inserted, whereby the said head serves to support the partitions as shown and described.

6. In a feed-water-heating apparatus, the combination with the grate-bars having separated upper and lower longitudinal passages, of lateral tubular arms which are attached to said bars, a hollow apertured head arranged in the inner end of an arm, and having on its inner side a tubular projection that communicates with the upper passage of the gratebar, and in its other side a horizontal slot, a

divides its chamber and is provided with openings and automatic check-valves seating in opposite directions, substantially as shown and described.

8. In a feed-water-heating apparatus, the combination with the boiler, a hollow grate and pipes G, connecting the latter with the boiler, of the pipe B, and separator 0, having an apertured and valved partition, and pump vand blow-oil pipes provided with Valves, as

shown and described to operate as specified.

' ELIHU K. JONES.

THOMAS N. WILSON. Witnesses:

ADOLF SCHUTZ, LEwIs A. WARD. 

